Perpetual calendar.



l. F. WYNNE.

PERPETUAL CALENDAR. 1,275,350. Y APPLICATLON FILED ocT.r la. 191s. Patented Aug. 1918..

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1. F. wYNNE. -P'ERPETUAL- CALENDAR.

Patented Ang. 13, 1918.

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l. F. WYNNE P'EBPET'UAL CALENDAR. APPLICTION-FILED OCT. 13| 1916.

Patented Aug. 13, 1918.

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JOI-IN F. WYNNE, 0F ATLANTA, Gr1*]( )RC1-IA."` i i PERPETUAL CALENDAR.

Specification of Letters Patent. Patented g; 1918,

Application fried october is, 1916. serial No. 125.413.

To all whom 'it may concern.'

Be it known that I, JOHN F. VVYNNE, a citizen of the United States, and a resident of Atlanta, in the county of Fulton and State of Georgia, have invented a certain new and useful Improvement in Perpetual Calendars, of which the following is a specification. p f The present invention relates to calendars, and particularly to that type know as perpetual calendars.

An object of the present invention is to provide a calendar of this characterl which is adapted for use as a daily, monthly, yearly, and reference calendar, and a Calendar which is of such a' nature' as to embody7 in a simplified and compact structure, all of the principles or features of all prior calendars, and permit the rapid forward and backward calculation o f days, Vmonths and years.

The inventionhas-for anotherv object to Y,

' or cards adapted to be secured to one side of peculiarly construct the calendar for coperation withnovel tables of days, months and years to permit the rapid adJustment of `the calendar for forward-and backward' calculation, and to ascertain quickly the exact day upon which the rst of each month falls,

yand the exact number of'days in each particular month.

.It is a further aim of the present invention to provide the'calendarwith means for singly and successively displaying'days of each month and the dates thereof, and to permitthe inspection of the entire month calendar without disturbing the adjustment vofthe single day display devices 'Y The above, and various other objects and advantages of this invention will be brought out moreclearly in the following detailed description of the present preferred ern-bodiment of this invention, the same being illustrated in the. accompanying drawings wherein:

Figure 1 is aplan view ofa calendar constructed according to the present invention,

and beingadjustedto disclose-the date of Fig. 2 is.asimilarfviewfshowing thecalendar adjustedV to display thie days of-an en.l 1

tire month.

. Fig'?) is a longitudinal sectiontaken on the lineB-Sl of Fig. 1, looking toward the top of the calendar.

Figi 4. is a tranaverse section taken on the therefor.

line 4 4 of Figi 1,showing the arrange-ly ment ofthe various slideseinp-loyed. Fig.V 5 is a plan view, in detail, ofthe-,day

Fig. 6 isa detailperspective viewof one of the cover strips. i

.Fig 7 is a detail perspectiveviewof the opposite cover strip. y Y. .Fig. 8` is .a detail perspective view, enlarged, of two of the adjustable blinds, showinent of. theblin'ds to thesupporting rod Fig. 9 is a detail perspective view lofone of the blinds, showing the pocketformed on thefront face thereof for. the-reception of an advertisingcard or the like.

view of one end of the month slide.

Fig. 11 isan enlarged fragmentary view of one end of the year slide. i

Fig. 12is a plan view of one lof the posters the calendar, and showing the arrangement of the key number table.

'.Fig. 13 is a plan View of a second paster or card adapted `for;attachment tothe face of the calendar, and showing the arrangementofthe ordinary and leap yeartables, and the century table; ,e

Referring to these drawings, wherein like `'parts are designated bysimilar` characters of `reference throughout 1 the yseveral Iviews, 15 designates the .b'acln'which may lbemade from heavycardboard', or any1 other suitable stiff 'n1aterial. The back {15,is preferably of rectangular formand inayibeV made-of .any Size and provided with suitable sup'- porting. orr suspension devicesy according kto vthe location in which it is. desiredio, place thejcalendan I The back'15 is-provided across face,

and atits lower edge, witha'relativelyI narrowspacing-stripgl, and is provided at its shown in Fig. 5, the day slide'18. comprises aflatfcard of aw'idth' adapted te fitfsnugly the guiding recess, and. being oflessllength ing the rear sides thereof, andthe attach- 10 is an enlarged fragmentary plan than that oi' :the back 15 to permit of the sliding of the day slide back and forth between the strips 16 and 1.7. The day slide 18 is provided, intermediate the ends thereof, with an outwardly projecting knob 19 adapted to be grasped in the fingers for operatingthe slide.

The day slide 18 is held in the guiding recess or groove by means V'of a pair of oppositely disposed partition plates 2O winch v afresuitably secured :across'the spacing strips 16 and 17, `adjacent tothe opposite ends vv`oftheback 15. A sight-opening or space is thus provided betw/een the inner opposite V14edges oft-the partition plates 20.

The day slide 18 is provided across its l`fa`ce,'an'd adjacent to its'upperedge with a horizontal row of consecutively increasing numbers from yoneto seven, corresponding to 'the-seven days of a week, the slide 18 jbeing .adapted for adjustment across the A"face -otheback 15 to bring thenumeral 1 immediately beneath any one of ythe hori- "zo'nt-ai 4'rows of abbreviations 21 arranged Aacross 'the lower edge of the spacing strip 17 inthesight opening. The day slide 18 is further provided with vertical and horizon'tai columns of consecutively increasing numbers ywhich-areso arranged that for any position "of V:theslide 18 in the sight opening,

the numbers will appear'therein Ain consecu- "tive-order and indicate the datesof the vari- -ous days-'of the selectedmo-nth. When the slide"=18 is `adjusted into the position shown in Fig. 2, and it `is desired to indicate a `month, having '-but 28 days, such as the lmonthof February during ordinary years,

la -vcover strip 22 lis provided lwhich is `mounted to 'slide horizontally across the second lower row of horizontal figures of `the :slide 18. This'cover slide or strip 22 is -of fawidth equal substantially to `the ywidth offsaid vhorizontal row of numbers, and is fies fitted ybetween Va lpair of spaced-apart guide strips 23 and 24 which are secured lagainst Y'fthe outer face of the partition plate 20. An VAL'outtinnedflip:25 isfform'ed onthe outer end -o'fftheslid'e strip 22 Yby means of which the fcover #strip Imay Vbe vdrawn outwardly across :the slide '118 to block ofi' or cover the desired number of numerals Vin the fhoriin -detail 'in Fig. "6, is' similarly mounted may be drawn outwardly across the lower horizontal row of numbers on the slide 18 to cover the outermost number and to disclose the next adjacent number through the opening 28.

The back 15 further supports a pair of face plates 29 and 80 of substantially the same size as the partition plates 20, and being arranged immediately over the same to cover the partition plates, and to hold the slides 22 and 26 in place. As shown in the drawings, staples 31 are employed for securing the face plates, and the Vpartition plates to the back 15.

At the top of the calendar, between the back 15 and the top stri-p 17, are arranged two slides, a year slide 32, and a month slide 33. These slides are each in the form of a long strip of a length substantially one-haltl that of the back 15, and provided at one end with an outwardly extending vknob 84 projecting through a longitudinal slot 35 formed for each slide, and by means of which each slide is guided in its horizontal path. As shown in Fig. 10, the month slide 33 is pro-vided with a longitudinal row or column of indicia designating consecutively the months of the year, and beneath each month the number of days in said month. In Fig. 11 there is shown one end of the year slide 82, and from which it will be noted that the slide has upon its face numerals designating consecutively a number `of years, and giving immediately below each year a key number for a purpose which will hereinafter appear. The strip 17 is provided, at the inner ends of the slot 35, and immediately over the sight opening for kthe day slide, with vertically spaced-apart sight openings 36 and 37 through which -may be viewed, respectively, the year with its key number, and t-he month with its num- `ber of days.

An open preferably rectangular frame 38 is vhinged at one end vertically upon the face plate 29 adjacent to the inneredge of the latter, and is adapted to Vbe swungV across kthe sightfopening of `the slide 18 and to engage at its free end the O Pbosite lface plate 80. A thumb nut n89 or the vvlike is 'mounted on the faceplate 30 and isadapted for vengagement with the free yend of the frame 38 to hold it across the slide 18. The frame 38 is provided with a plurality vof `vertically spaced-apart rods 40 which'eX- tend 'horizontally across the frame 88 and are Vsecured vto the opposite. ends thereof. Any number of these horizontal rods l0 may be provided inthe frame38, preferably one rod for eachv horizontal Arow of numbers upon the slide 18. Slidably mountedon-the rods 40 area plurality or series of blinds 41 oi' a width and length corresponding to the s width and length of each number on the slide 18, and adapted to cover the Vnumbers on the slide 18 from view. When the frame 38 is swung into closedposition, shown 1n Fig-1, the blinds 41 normally cover all .of

the numbers onthe face ,of` the Vslide 18 which appearin the sight opening.- In this figure, thenumber 19 in the second vertical column of the dayslide is disclosed. To effect this, thefirst slide 41 o n the fourth rod 40. is slidV into the left-hand end of the frame 38 to first uncover the numeral 18. The neXt adjacent slide 41. isfnow moved leftward, tocover the number 18 and to discloseA the number 19 as shown. In alikemanner, each successive blind41 may be slid toithe left to uncover each successive number and to hide the date of the day preceding. When the lowermostcolumn of figurespn the day -slide 18 appears inthe vsightopening, the cover pla-te 26 may be operated to dis-vv close but one of 'thenumbers at` a time,fand the blinds 41 mayfall be retained in normal` position. v` f j As shown 4to advantage in Figs. 8 andf9, each blind maybe in .the formof a relatively flat plate having its upper edge rolled over to providea sleeve 42 for sliding `en gagement on 'the rodf40. The. end and bottom edges of the plates are rolled over forwardly to providespacedflanges 4 3 behind which may be slid acard 44 or the like bearing an advertisement. rIfhis calendar 'is adapted particularly for use. in hotels, banks, publicfoflices and the like, andthe blinds V41 provide neatand attractive means for holding 'a relatively large number of displaycards@ The face plates 29 and 30 may be provided with posters or cards 45 Iand46 -to which the key numbers on the slide 32 refer. The card 45 is provided with a key-number table, and is `provided with vertical columns of numbers indicating consecutively the years beginning with'1600 and ending with 1999,- Each year .number: is provided withl a key number, the key numbers running from 1, to 14. inclusive, and corresponding with and supplementing the year slide 82., Across lthe lower end of the card 45 may be placed a legend lexplaining the lpurpose and use ofthis table. f l,

The card 46 isprovided upon its face, and at its top,- with an ordinary year table divided Vinto seven columns corresponding to seven of the key numbers above referred to.` These columns are arranged vertically, and in each are the names of the twelve months followed by the names; ofthe days on which the rst of each month falls. Thus, if thekey number is three, upon rreference to this ordinary .year table, it willbe found outthat the first of June falls;l uponl Saturday. Upon referenceto the Akey number table,fit willbe foundthat the yearf190r7his followed by the key number three.` Therefore, '1907 the first of June falls on Saturday.

45 shows *that` the predetermined year is followed by a` key number from eight to fourteen, it is thenvknown thatthe year. is aleapyear, and upon reference to the 'leap year table the vday upon which the selected month falls will be readilyffound. These key number` columnson the card 46determine the position in which to adjust the slide'18'so as to place the numeral one' thereof beneath the designated day ofthe fixed column carried in the sight opening;

The card 46 is further` provided, preferably near its lower end, with four columns `of numbers headed by century numbers, suchA as 1600, 1700, 1800 and 1900. A suitable legend is placed at thelowel,v endof the card 46 to explain the use of this centurytable. In the 1600 column are placed century numbers which are four hundred years apart, and which therefore have the same key number as the century` number .should it be desired forany purpose to ascertain upon what day'the first of March 2006 would fall upon, it would be necessary to refer to theyear 1600 which appears at the top of the first century column, and to trace the yyear 16,06 upon the `key vnumber tablev on the card 45,. and it lwill be found that the key number of such year is one. Referring now to the first key number column on the card 46, it-will be found `that the first of March ofl the said' year falls upon Wednesday. The monthslide V33y indicates below the ,name of each month the number of days therein, and this slide may.

be manipulated to calculate the exact num-V ber `of'daysbetween any given period. It

is ofcourse understood that the details of Y ed accordingly, anronth slide on the bodyportion having numbers thereo-1'rcorrespond--- ine .te .the 1-umher ef des 11e-@Marguerite months and' adapted' to be adjusted according to the tables, and a day slide' having day numbers thereon adapted tobe adjusted according to the table and month slide indications. l

2. In a calendar, the combination of a body portion provided with tables thereon arranged according to key numbers, a year slide mounted on said body portion and bearing year numbers with corresponding key numbers arranged immediately thereba neath and adaptedv to be disclosed one at a time, said key :numbers on the year slide being arranged in said tables to indicate' the day of the Week upon which the irst of each month falls, and a day slide arranged on said body portion and bearing columns of consecutively arranged numbers indicating the days of a month and adapted tol be adjusted according to the showingl of said tables.

3. in a calendar, the combination of a body portion having rows of tables thereon arranged according to key numbers, a year slide mounted on said body portion and having various years marked thereon and key numbers beneathl saidI years according to said tables, said bod-y portion also having a column of consecutively arranged days of the week, and an adjustable slidehaving columns of consecutively arranged numbers indicating the days of a month and adapted for adjustment beneath said column of days of the week according tothe showing of' said tables.

4; In a calendar7 the combination of a body portion provided with tables on the face thereof arranged according to key numbers, and having a column of days of the week arranged consecutivelyy across the face of the body portion, a year sli-demounted upon the body portion, said body portion having a sight opening therein adapted to disclose the years on said year slide one at a time, the years on the year slide each having a key number corresponding thereto andv ar'- ranged' therebeneath, and a day slide provided with columns of numbers indicating the days of the month and; adapted for ad'- justment relatively to said days of the week column according to the showing of said tables as indicated by said key numbers.

5. In a calendar, the combination of a body portion provided with tables thereon arranged according to key numbers, a year slide mounted on said body portion and bearingyear numbers with corresponding key numbers arranged immediately' beneath and adapted to be disclosed one at a timev with the yearv numbers, said key numbers on the year slidebeing arranged in said tables to indicate the month and the day of thek week upon which the first of'each month falls, a day slide arranged on said body portion and bearing columns'of consecuiig-erase() tively arranged numbers indicating the daysy of ay month anfdl adapted to be adjusted according tothe showingfof said tables, and a month slide having numbers beneath the month indications thereon indicating 'the number of days inthe respectivemonthsy and adapted to be adjusted according to the tables to indicate thefmonth of'the'year and to (llorrespond tol the adjustment of the day sli e.

6'. In a calendar, the combination of a body portion provided with day, month and year tables and key numbers therefor, and having a relatively large sight opening, and two smaller sight openings, said bodyv also having a row of days of the Week arranged consecutively across Vthe relatively large sig-ht opening, a day slide adjustably`A mounted on the bodyv portion and bearing columns of'numbers' adapted lfor adjustment according to said' tables in said relatively large sight opening beneath the rows of days` of the Week to show the dayV upon which each first of month falls and the numbers of the succeeding days, a year slide mounted on said body portion and bearing year numbers and corresponding key numbers adjacent theretoy adaptedto be viewed one at a time through one of said smaller sight openings, said key numbers on the year slide being adaptedv to indicate on said tables the ad",- justment for said day slide, a monthlslide mounted on the body portion and bearing the months of each` year with the days of each month arrangedl adjacent thereto and adapted to be disclosed in the secondQIle of saidy smaller sight openings, and means for blocking oi'the numbers on said Vday slide to adjust theL latter according to the reading on said month slide. i

7'. In a calendar, a body portion having month and day tables, thereon, a slideV in the body having a plurality of horizontal rrow of consecutively increasingv numbers indieatingV the days` of a month and adaptedj to be adjusted according to saidtables7 amonth slide mounted on said body portion and bearing the names of the months andthev numbers: of days beneath the name of each respective month andvadapted to be adjusted according to sai-d tables, a coveringy slide .ar-

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ranged at the rig-ht side of said first slide andK adapted to cov-er an adjacent number in the second" last rowl ofthe same, and a secondy covering sli-de adjustable, attlie left. side of the body portion and adapted `for adjustment over the two' adjacent; numbers ofthe last row-of the same, said second covering" slide being provided with an opening intermediate its ends ,adapted to close the adjacent end number oi. the last row and ,to` cover the second adjacent numbersaid coveri'ngI slides being adjustable` according to the-.number of days indicated' on said-'month sli e.

l 8. In a calendar, a body portion having a key number table thereon formed of columns of year numbers having key numbers having corresponding positions opposite to the year numbers, and having a century table including columns of predetermined period years corresponding to the tabulated years in the key number table, a year slide adjustably mounted on said body portion and having years marked thereon With corresponding key numbers adjacent to each year and adapted to be disclosed one at a time on the body portion, said body portion being also providedv with tables comprising vertical columns of months and days arranged according to the key numbers and adapted to indicate the day upon Which the first of each month falls under the given key Vnumber, said body portion being also provided With a horizontal roW of consecutively ar- JoHN F. WYNNE.

Copies of this patent may be obtained for `five cents each, by addressing the Commissioner o1 Patents,

Washington, D. 0.

'20 Vranged days of the Week, and a day slide 

